bool tryParseAttributeReference(const StringPiece16& str, ResourceNameRef* outRef) {
StringPiece16 trimmedStr(util::trimWhitespace(str));
if (trimmedStr.empty()) {
return false;
}
if (*trimmedStr.data() == u'?') {
StringPiece16 package;
StringPiece16 type;
StringPiece16 entry;
if (!extractResourceName(trimmedStr.substr(1, trimmedStr.size() - 1),
&package, &type, &entry)) {
return false;
}
if (!type.empty() && type != u"attr") {
return false;
}
if (entry.empty()) {
return false;
}
if (outRef) {
outRef->package = package;
outRef->type = ResourceType::kAttr;
outRef->entry = entry;
}
return true;
}
return false;
}
/*
* Style parent's are a bit different. We accept the following formats:
*
* @[[*]package:][style/]<entry>
* ?[[*]package:]style/<entry>
* <[*]package>:[style/]<entry>
* [[*]package:style/]<entry>
*/
Maybe<Reference> parseStyleParentReference(const StringPiece16& str, std::string* outError) {
if (str.empty()) {
return {};
}
StringPiece16 name = str;
bool hasLeadingIdentifiers = false;
bool privateRef = false;
// Skip over these identifiers. A style's parent is a normal reference.
if (name.data()[0] == u'@' || name.data()[0] == u'?') {
hasLeadingIdentifiers = true;
name = name.substr(1, name.size() - 1);
}
if (name.data()[0] == u'*') {
privateRef = true;
name = name.substr(1, name.size() - 1);
}
ResourceNameRef ref;
ref.type = ResourceType::kStyle;
StringPiece16 typeStr;
extractResourceName(name, &ref.package, &typeStr, &ref.entry);
if (!typeStr.empty()) {
// If we have a type, make sure it is a Style.
const ResourceType* parsedType = parseResourceType(typeStr);
if (!parsedType || *parsedType != ResourceType::kStyle) {
std::stringstream err;
err << "invalid resource type '" << typeStr << "' for parent of style";
*outError = err.str();
return {};
}
}
if (!hasLeadingIdentifiers && ref.package.empty() && !typeStr.empty()) {
std::stringstream err;
err << "invalid parent reference '" << str << "'";
*outError = err.str();
return {};
}
Reference result(ref);
result.privateReference = privateRef;
return result;
}
bool parseResourceName(const StringPiece16& str, ResourceNameRef* outRef, bool* outPrivate) {
if (str.empty()) {
return false;
}
size_t offset = 0;
bool priv = false;
if (str.data()[0] == u'*') {
priv = true;
offset = 1;
}
StringPiece16 package;
StringPiece16 type;
StringPiece16 entry;
if (!extractResourceName(str.substr(offset, str.size() - offset), &package, &type, &entry)) {
return false;
}
const ResourceType* parsedType = parseResourceType(type);
if (!parsedType) {
return false;
}
if (entry.empty()) {
return false;
}
if (outRef) {
outRef->package = package;
outRef->type = *parsedType;
outRef->entry = entry;
}
if (outPrivate) {
*outPrivate = priv;
}
return true;
}
Maybe<std::u16string> getFullyQualifiedClassName(const StringPiece16& package,
const StringPiece16& className) {
if (className.empty()) {
return {};
}
if (util::isJavaClassName(className)) {
return className.toString();
}
if (package.empty()) {
return {};
}
std::u16string result(package.data(), package.size());
if (className.data()[0] != u'.') {
result += u'.';
}
result.append(className.data(), className.size());
if (!isJavaClassName(result)) {
return {};
}
return result;
}